Podcast
Questions and Answers
On which network is Computer 2 with IP address 10.1.1.205?
On which network is Computer 2 with IP address 10.1.1.205?
NOT Network C
For what purpose would Computer 1 send a FF:FF:FF:FF:FF broadcast ARP message to all nodes on Network A?
For what purpose would Computer 1 send a FF:FF:FF:FF:FF broadcast ARP message to all nodes on Network A?
NOT: To obtain Computer 2 MAC address
Which layer constructs the Ethernet frame?
Which layer constructs the Ethernet frame?
Data Link Layer
What information is in the data payload for the IP datagram?
What information is in the data payload for the IP datagram?
Signup and view all the answers
What information needs to be in the destination MAC address when sending from Router Y to Router Z?
What information needs to be in the destination MAC address when sending from Router Y to Router Z?
Signup and view all the answers
What's the first step that Router Z does after receiving the Ethernet frame?
What's the first step that Router Z does after receiving the Ethernet frame?
Signup and view all the answers
If the TTL value was set to 64 at the beginning, what is the value of the TTL once it reaches its destination?
If the TTL value was set to 64 at the beginning, what is the value of the TTL once it reaches its destination?
Signup and view all the answers
What information for the fourth TCP segment of data is relevant when Computer 1 sends a request to Computer 2 on port 80?
What information for the fourth TCP segment of data is relevant when Computer 1 sends a request to Computer 2 on port 80?
Signup and view all the answers
Which of the following has the correct IP datagram information for Computer 1 on network B sending to Computer 2?
Which of the following has the correct IP datagram information for Computer 1 on network B sending to Computer 2?
Signup and view all the answers
When referring to RJ45, we are referring to ________.
When referring to RJ45, we are referring to ________.
Signup and view all the answers
What information is Computer 1 looking at in the ARP table on Router Y?
What information is Computer 1 looking at in the ARP table on Router Y?
Signup and view all the answers
Which layer constructs the IP datagram?
Which layer constructs the IP datagram?
Signup and view all the answers
What information is in the payload section of the TCP segments?
What information is in the payload section of the TCP segments?
Signup and view all the answers
What information needs to be in the destination MAC address when sending from computer 1 to its gateway?
What information needs to be in the destination MAC address when sending from computer 1 to its gateway?
Signup and view all the answers
What's the second step that Router Z does after receiving the Ethernet frame?
What's the second step that Router Z does after receiving the Ethernet frame?
Signup and view all the answers
If the TTL value was set to 64 at the beginning for Computer 1, what is the value of the TTL once it reaches its destination?
If the TTL value was set to 64 at the beginning for Computer 1, what is the value of the TTL once it reaches its destination?
Signup and view all the answers
What information for the first TCP segment is correct when Computer 1 sends FTP request to Computer 2?
What information for the first TCP segment is correct when Computer 1 sends FTP request to Computer 2?
Signup and view all the answers
Which of the following has the correct IP datagram information for Computer 1 on network B sending to Computer 2?
Which of the following has the correct IP datagram information for Computer 1 on network B sending to Computer 2?
Signup and view all the answers
Study Notes
Network Addressing
- Computer 1 on Network B (IP: 192.168.1.233) targets Computer 2 (IP: 10.1.1.205) located on a different network than its own.
- Computer 1 on Network C (IP: 172.16.1.57) aims to communicate with Computer 2 (IP: 172.16.1.133), with a Time to Live (TTL) value remaining unchanged at 64 upon arrival.
ARP Messaging
- Sending a broadcast ARP message (FF:FF:FF:FF:FF) allows Computer 1 to gather network node information; not exclusively to acquire the MAC address of Computer 2.
- Computer 1 checks the ARP table of Router Y for the corresponding MAC address of the desired IP address.
Layer Functions
- The Data Link Layer is responsible for constructing the Ethernet frame.
- The Network Layer constructs the IP datagram, ensuring correct packet delivery.
- The payload of the IP datagram typically contains the TCP segment, which includes important application data.
Packet Destination
- To send packets to Router Z, the Ethernet datagram requires Router Z's MAC address as the destination.
- When communicating with Router Y, Computer 1 must use Router Y's MAC address in the Ethernet datagram.
TCP Segment Information
- For FTP communication initiated by Computer 1 on network A, the TCP segment information includes:
- Source Port: 21086
- Destination Port: 21
- Sequence Number: 1
- Acknowledgment Number: 2
- In web server requests, specifying the correct source and destination ports ensures proper routing on the target machine.
Ethernet Frame Reception Process
- Upon receiving an Ethernet frame, Router Z first calculates a checksum to verify the frame's integrity against the header's checksum.
IP Datagram Fields
- Critical fields in the IP datagram for Computer 1 on Network B targeting Computer 2 include:
- Version: 4
- Minimum Header Length: 20
- Source IP Address: 192.168.1.121
- Destination IP Address: 172.16.1.57
RJ45 Reference
- RJ45 refers specifically to the cable plug, a crucial connector in Ethernet networking.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your understanding of the Five-Layer Network Model with this quiz. Answer questions on IP addressing and ARP message broadcasting. Perfect for students studying networking concepts and protocols.
